Thread-brake.



N0. 768,926. PATENTED AUG. 30,1904.

' H. A. BATES.

THREAD BRAKE.

APPLICATION FILED MAY 18, 1903.

N0 MODEL.

UNiTEn STATES Patented. August 30, 1904.

PATENT ()FFICE.

HENRY A. BATES, OF MIDDLETOWVN, CONNECTICUT, ASSIGNOR TO THE SUMMITTHREAD COMPANY, OF EAST HAMPTON, CONNECTICUT, A

CORPORATION OF MAINE.

THREAD-BRAKE.

SPECIFICATION forming part of Letters Patent No."768,926,'datec1 Augustso, 1904.

Application filed May 18,1903.

To all whom it may concern.-

Be it known that I. HENRY A. BATES, a citizen of the United States,residing at Middletown, in the county of Middlesex and State ofConnecticut, have invented an Improvement in Thread-Brakes, of which thefollowing is a specification.

In the various forms of sewing-machines difficulties have heretoforebeen experienced because of the too free paying off of the thread fromthe spools or cops,which in spools placed vertical was liable to causethe thread to twist around the standard beneath the spool and in spoolsplaced horizontal caused a jerking movement in which the thread waseither too taut or very loose, all of which it is the object of myinvention to overcome.

1n carrying out my invention I provide a pivotally-mounted fine-wireframe of parts twisted together to form one or more loops, andpreferably a series of loops, through which the thread is passed anddrawn ofi the spool or cop. This frame not only directs the delivery ofthe thread from the spool or cop, but moves to compensate for the slackand draft, and said frame is to be pivotally mounted, so as to be freeto move as the thread is drawn off the spool or cop so as to take up theslack and move with the draft on the thread and so to brake the same. Iprefer to pivot the fine-wire frame to the pivot-bar of a bracket-armover the spool or cop, which is supported upon a base and is passed overa standard, and to make the free end of the bracket-arm with anenlargement and an eye and to pass the thread from the spool or copthrough the eye and back and forth through the series of loops of thefine-wire frame.

In the drawings, Figure 1 is an elevation, and Fig. 2 a plan,representing my invention.

(t represents a cop upon astandard 7),which is connected to a support orbase 0. A spool may occupy the position of the cop without departingfrom my invention. Secured to the base 0 and rising therefrom is abracketarm (Z, the upper portion of which is at right angles to theupright portion and in a horizontal plane. This upper portion isprovided Serial No. 157,532. (No model.)

with a pivot-bar d and an enlarged free end (Z in which end'is an eye 2.y

' The fine-wire frame is composed of parallel portions 6 a with eye endswhich pass around the pivot-bar CZ between the enlarged end thereof andthe union of said pivot-bar with the horizontal portion of thebracket-arm. The parallel portions (2 e are twisted together at e andformed into circular loops in a plane parallel with each other and withthe twisted portion. In the drawings I have shown four of these circularloops, but do not limit myself to the employment of any particularnumber, as the function of the device would be the same and the sameresult would be obtained by the employment of a single loop, exceptpossibly in a different degree.

I prefer to employ a series of circular loops. The connection of theparallel parts e with the pivot-bar (Z is preferably formed by twistingthe free ends of the wire loosely around the bar. The wire frame isadapted to hang from the pivot-bar (Z by gravity and to come at one sideof the line of the bracket-arm cl; but the circular loops 6 project fromsaid frame toward the line of the bracket-arm, so that their ends aresubstantially in line therewith, providing a straightaway draft for thethread which passes up from the cop a, through the eye 2, and back andforth through the loops 6 of the series forming part of the fine-wireframe. This frame is adapted to rise and fall with the tension upon thethread, so as to take up the slack and brake the thread.

I not only do not limit myself to the number of circular loops of thefine-wire frame, but I do not limit myself to the peculiar pivotalconnection of said frame to its support; nor do I limit myself toplacing the spool or cop vertical, although the vertical position ispreferable. This device is simple. It is easily applied as a thread andcop device to sewingmachines already in use, and it forms an effectivethread-brake.

I claim as my invention 1. The combination with a thread-holder such asa spool or cop, a standard upon which the same is received and a supporttherefor, of

a fine-wire frame twisted to produce a series of alining loops in aplane substantially parallel to the draft-line of the thread, a supportto which the free ends of said frame are pivotally connected so that theframe is adapted to hang by gravity, the thread from the thread holderpassing through the loops of said finewire frame, substantially as setforth.

2. The combination with a thread-holder, such as a spool or cop, avertical standard upon which the same is received and a horizontalsupport therefor, of a fine-wire frame twisted to produce a series ofalining loops, a bracketarm rising from the support and having ahorizontal portion, a pivot-bar formed with the bracket-support and towhich the fine-wire frame is pivotally connected above the spool or cop,so that the frame is adapted to hang by gravity, the thread from thethread-h0lder passing through the loops of said fine-wire frame.

3. The combination with a thread-holder, such as aspool or cop, astandard upon which the same is received, a support therefor, abracket-arm rising from the support and having a part at right anglesthereto, terminating in an enlargement with an eye and formed at oneside with a pivot-bar, of a fine-wire frame having parallel partspivotally connected to the said. bar and twisted to produce a series ofalining loops, the thread from the threadholder passing through the eyeat the end of the bracket-arm and through the loops of said fine-wireframe.

4. The combination with a thread-holder such as a spool or cop, astandard upon which the same is received, a support therefor, abracket-arm rising from the support and having a part at right anglesthereto terminating in an enlargement with an eye and formed at one sidewith a pivot-bar, of a fine-wire frame in part twisted together andhaving in the twisted portion a series of alining circular loops, thefree ends of the frame being substantially parallel and bent around theaforesaid pivot-bar, the alining loops being in a plane substantiallyparallel to the draft-line of the thread, the frame hanging by gravityfrom said pivot-bar, and the thread from the thread-holder passingthrough the eye at the end of the bracket-arm and successively back andforth through the alining loops of the fine-wire frame.

Signed by me this 14th day of May, 1903.

HENRY A. BATES.

\Vitnesses:

Guo. T. PINOKNEY, S. T. HAVILAND.

